TY - JOUR
T1 - A WISE Survey of Circumstellar Disks in the Upper Scorpius Association
AU - Esplin, T. L.
AU - Luhman, K. L.
AU - Miller, E. B.
AU - Mamajek, E. E.
N1 - Funding Information:
T.E., K.L., and E.B. were supported by grant NNX12AI58G from the NASA Astrophysics Data Analysis Program. E.M. acknowledges support from the NASA NExSS program. We thank Katelyn Allers for providing the modified version of Spextool for use with ARCoIRIS data. WISE and NEOWISE are joint projects of the University of California, Los Angeles, and the Jet Propulsion Laboratory (JPL)/California Institute of Technology (Caltech), funded by NASA. The Spitzer Space Telescope is operated by JPL and Caltech under contract with NASA. The IRTF is operated by the University of Hawaii under contract NNH14CK55B with NASA. 2MASS is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center (IPAC) at Caltech, funded by NASA and the NSF. Our work is based in part on (1) observations at CTIO, National Optical Astronomy Observatory (NOAO Prop. ID: 2015A-0192 and 2017A-0161; PI: T.E.), which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the NSF; and (2) observations obtained at the SOAR telescope, which is a joint project of the Ministério da Ciência, Tecnologia, Inovaçãos e Comunicaçãoes (MCTIC) do Brasil, the NOAO, the University of North Carolina at Chapel Hill (UNC), and Michigan State University (MSU). The Digitized Sky Surveys were produced at the Space Telescope Science Institute under U.S. Government grant NAG W-2166. The images of these surveys are based on photographic data obtained using the Oschin Schmidt Telescope on Palomar Mountain and the UK Schmidt Telescope. The plates were processed into the present compressed digital form with the permission of these institutions. This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC,https:// www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium.
Publisher Copyright:
© 2018. The American Astronomical Society. All rights reserved.
PY - 2018/8
Y1 - 2018/8
N2 - We have performed a survey for new members of the Upper Sco association that have circumstellar disks using mid-infrared photometry from the Wide-field Infrared Survey Explorer (WISE). Through optical and near-infrared spectroscopy, we have confirmed 185 candidates as likely members of Upper Sco with spectral types ranging from mid-K to M9. They comprise ∼36% of the known disk-bearing members of the association. We also have compiled all available mid-infrared photometry from WISE and the Spitzer Space Telescope for the known members of Upper Sco, resulting in a catalog of data for 1608 objects. We have used these data to identify the members that exhibit excess emission from disks and we have classified the evolutionary stages of those disks with criteria similar to those applied in our previous studies of Taurus and Upper Sco. Among 484 members with excesses in at least one band (excluding five Be stars), we classify 296 disks as full, 66 as evolved, 19 as transitional, 22 as evolved or transitional, and 81 as evolved transitional or debris. Many of these disks have not been previously reported, including 129 full disks and 50 disks that are at more advanced evolutionary stages.
AB - We have performed a survey for new members of the Upper Sco association that have circumstellar disks using mid-infrared photometry from the Wide-field Infrared Survey Explorer (WISE). Through optical and near-infrared spectroscopy, we have confirmed 185 candidates as likely members of Upper Sco with spectral types ranging from mid-K to M9. They comprise ∼36% of the known disk-bearing members of the association. We also have compiled all available mid-infrared photometry from WISE and the Spitzer Space Telescope for the known members of Upper Sco, resulting in a catalog of data for 1608 objects. We have used these data to identify the members that exhibit excess emission from disks and we have classified the evolutionary stages of those disks with criteria similar to those applied in our previous studies of Taurus and Upper Sco. Among 484 members with excesses in at least one band (excluding five Be stars), we classify 296 disks as full, 66 as evolved, 19 as transitional, 22 as evolved or transitional, and 81 as evolved transitional or debris. Many of these disks have not been previously reported, including 129 full disks and 50 disks that are at more advanced evolutionary stages.
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U2 - 10.3847/1538-3881/aacce0
DO - 10.3847/1538-3881/aacce0
M3 - Review article
AN - SCOPUS:85051496301
VL - 156
JO - Astronomical Journal
JF - Astronomical Journal
SN - 0004-6256
IS - 2
M1 - 75
ER -